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#include "googletest.h"

#include <sourcerangefilter.h>

namespace {

using testing::ContainerEq;
using testing::IsEmpty;

using ClangBackEnd::SourceRangeWithTextContainer;
using ClangBackEnd::SourceRangeWithTextContainers;
using ClangBackEnd::SourceRangesForQueryMessage;

class SourceRangeFilter : public ::testing::Test
{
protected:


protected:
    SourceRangeWithTextContainers sourceRanges1{{1, 1, 1, 1, 2, 1, 4, "foo"},
                                                {1, 1, 1, 1, 2, 2, 5, "foo"},
                                                {2, 1, 1, 1, 2, 1, 4, "foo"}};
    SourceRangeWithTextContainers sourceRanges2{{3, 1, 1, 1, 2, 1, 4, "foo"},
                                                {1, 1, 1, 1, 2, 1, 4, "foo"},
                                                {1, 1, 1, 1, 2, 3, 6, "foo"}};
    SourceRangeWithTextContainers sourceRanges3{{1, 1, 1, 1, 2, 3, 6, "foo"},
                                                {3, 1, 1, 1, 2, 1, 4, "foo"}};
    SourceRangeWithTextContainers sourceRanges4{{1, 1, 1, 1, 2, 3, 6, "foo"},
                                                {3, 1, 1, 1, 2, 1, 4, "foo"},
                                                {3, 1, 1, 1, 2, 1, 4, "foo"}};
    SourceRangeWithTextContainers sourceRanges5{{3, 1, 1, 1, 2, 1, 4, "foo"},
                                                {1, 1, 1, 1, 2, 3, 6, "foo"}};
    SourceRangesForQueryMessage message1{{Utils::clone(sourceRanges1)}};
    SourceRangesForQueryMessage message2{{Utils::clone(sourceRanges2)}};
    ClangBackEnd::SourceRangeFilter filter{3};
};

TEST_F(SourceRangeFilter, DontChangeForFirstTimeIfElementsAreUnique)
{
    auto sourceRange = filter.removeDuplicates(Utils::clone(sourceRanges1));

    ASSERT_THAT(sourceRange, ContainerEq(sourceRanges1));
}

TEST_F(SourceRangeFilter, DoNotFilterNonDuplicates)
{
    filter.removeDuplicates(Utils::clone(sourceRanges1));

    auto sourceRange = filter.removeDuplicates(Utils::clone(sourceRanges3));

    ASSERT_THAT(sourceRange, ContainerEq(sourceRanges3));
}

TEST_F(SourceRangeFilter, FilterDuplicates)
{
    filter.removeDuplicates(Utils::clone(sourceRanges1));

    auto sourceRange = filter.removeDuplicates(Utils::clone(sourceRanges2));

    ASSERT_THAT(sourceRange, ContainerEq(sourceRanges3));
}

TEST_F(SourceRangeFilter, FilterMoreDuplicates)
{
    filter.removeDuplicates(Utils::clone(sourceRanges1));
    filter.removeDuplicates(Utils::clone(sourceRanges2));

    auto sourceRange = filter.removeDuplicates(Utils::clone(sourceRanges3));

    ASSERT_THAT(sourceRange, IsEmpty());
}

TEST_F(SourceRangeFilter, FilterDuplicatesFromMessage)
{
    filter.removeDuplicates(std::move(message1));

    auto filteredMessage = filter.removeDuplicates(std::move(message2));

    ASSERT_THAT(filteredMessage.sourceRanges.sourceRangeWithTextContainers,
                ContainerEq(sourceRanges3));
}

TEST_F(SourceRangeFilter, FilterDuplicatesInOneRangeSet)
{
    auto sourceRange = filter.removeDuplicates(Utils::clone(sourceRanges4));

    ASSERT_THAT(sourceRange, ContainerEq(sourceRanges3));
}

TEST_F(SourceRangeFilter, SortSourceRanges)
{
    auto sourceRange = filter.removeDuplicates(Utils::clone(sourceRanges5));

    ASSERT_THAT(sourceRange, ContainerEq(sourceRanges3));
}

}